Tile lining for cylindrical kilns



Jan. 10, 1928. 1,655,566

G. P. REINTJES TILE LINING FOR TILINDRICAL KILNS Filed Jan. 10. 1927 2 Sheets-Sheet 1 INVENTOR.

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Jan. 10, 1928. 1.655,566

G. P. REINTJES TILE LINING FOR CYLINDRICAL KILNS Filed Jan. 10, 1927 2 Sheet-Sheet 2 a 4 j a Petented'Jan. .10, 1928.

UNITED STATES PATENT OFFICE.

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Application filed Ianuary 10, 1927. Serial No. 160,149.

This invention relates to fire brick linings for cement kilns, ore roasting furnaces and the like. Heretofore kilns of the general character mentioned have commonly been I lined with inwardly-taperingfire hrickhaving no locking relationship other than that of the conventional keystone of tapermg form used in the erection of arches, and the use of the smooth .faced tapering brick new cessitated the temporary support by indlvidual bracing of practically all of theibrick rom the crest downward on each side to points not far'short of the horizontal plane of the axisof the kiln. The setting of a lining of fire brick or tileof-the conventional type mentioned, with the necessityof bracing a multiplicit of its units is slow and costly, and my 0 feet is to 1 provide shoulderc ing relation, can be laid or set as easily as ordinary tile and require only about two braces in each ring of tile, instead of a brace for each tile except the topmost or key tile gjthe ring, upward from points about thirty kegrees above the horizontal center of the By the provision of sets-of key tile of re versed type, the intermediate tile can set parts as hereinafter described and claimed;

and in order that it may be fully understood, reference is to be had to the accompanying drawings, in which Figure 1 represents-an end view of a kiln equipped with a lining embodying the invention.

Figure 2 is a fragmentary plan view with lining tile which, with an interlock- Figure 10 is an end view of the same. Referring now to the drawin in detail, 1 represents the metal shell 0 a kiln for cement making or ore roasting furnaces, these shells being of large diameter and of relatively great length. Such shells must be protected from the intense heat to which their contents are subjected and are therefore customarilyjlined with fire brick or tile. As hereinbefore suggested it is common to ,line them with smooth tapering fire brick and the settipg of such tile is slow and costly. In lieu of the common tile mentionedI propose to employ tile which are stepped or shouldered so as to interlock to ether at their abutting faces, all of the tile t us interlocking together except certain key tile of which I prefer to employ four sets, each set consistin of two tile.

The tile, including the key tile are set to form rings 2, adjacent rings abutting at their sides as indicated by Figure 2.

At diametrically opposite points are sets of key tile 3, and at right angles tovsuch sets of key tile are sets of key tile 4, and between and interlocking with each key tile 3' and 4 and with each other are intermediate tile 5.

The opposite sides of all of the tile are parallel, and this-is true of the ends of the tile. The opposite edges of all of the intermediate tile converge inwardly toward the axis of the shell and this statement also applies as to the keytiles. Each of the latter at one edge extends at a slight angle to its opposite edge. that is to say, one face. or side of: each key tile is slightly wider than the. other face of said tile, the bevel edge thus produced being indicated at 6 on tiles 3, as said tiles are of identical form and proportion, one of each pair being reversed with respect to the other so that it may be wedged into place and thus act to exert force laterally upon the abutting key tile and the inlvrmcdiule tile. A

Each of the key tiles 3 at its edge where it abuts an intermediate tile is stepped and the step is corrugated to provide a tongue 7 and a groove 8.

Each of the tiles 4 at the edge where it abuts its companion key tile is bevelled at 9 to correspond with the bevelled edges 6 of i the tiles 3, and the other edge of each tile 4 where it abuts an intermediate tile has a corrugated step constituting a tongue 10 and a groove 11. i

Each intermediate tile has corrugated but reversely facing steps at both edges to provide tongues 13 and grooves 14, one step facing inwardly and the other outwardly.

In settin the tile the lower pair of tiles 3 are first p aced in position in the shell with their bevelled edges abutting and their shoulders or steps facing upwardly. Intermediate tiles are then interlocked with said key tiles'and with each other until the lower half of a ring is about completed. The tiles because the shells approximate eleven feet in diameter. With the braces or wands in place, any tendency of the series of tiles extending upwardly and inwardly from the key tiles 4, slide inward and downward, will be prevented, and when this, bracing has been accomplished the remainder of the intermediate tiles are braced in position and finally the topmost pair of key tile are set, it being recalled that these key tiles 'are bevelled at their abutting or straight edges so .t-hzit one of each pair acts as a wedge, any

suitable means being resorted to, such as a cementitious material, not shown, serving.

' to guard against the wedge'members of the i key tiles from being crowded out'of position, it being apparent that this possibility of dislodgment of such key tiles has relation only to those of the endmost rings of the' lining. Instead of securing 'such wedging tiles by cement or the like, they may obviously be secured by pins P extending through the shell and into the wedging tile of each set, as indicated at one point on Figure 1, or by any equivalent means.

To accommodate kilns of the character under consideration which do not vary a great deal in diameter, the tongues of the various tiles will fit the grooves of engaging tile with a little play so that tiles of standard size may be employed to form the rings in the shells of such different diameters, provided a few intermediate tiles slightly different in width from edge to edge be provided to be used with the standard size tiles in making a setting for any particular shell, that is to say, a few tiles slightly narrower from edge to edge may be used in conjunc tion with the standard tiles for a minimum diameter shell, whereas with a shell with maximum diameter, it will be necessary to use a few tiles of greater width from edge to edge than the standard size. If the sizes vary greatly properly sized tiles for the same will be provided, I have found that the vast majority of tiles emplo ed may be of one standard size, and that t e necessity of manufacturing and maintaining large stocks of tiles of several different sizes will be unnecessary.

From the above description it will be apparent that I have pro need a lining for cement kilns and the like which embodies the features of advantage set forth as desirable in the-statement of the objects of the invention, and which may-be modified in minor particulars within the principle and scope of the appended claims.

What I claim is:

1. A tile lining for kilns, com risings ets of key tiles having edges in we go relation,

and their opposite edges stepped, and intermediate tiles having their opposite edges stepped and in interlocking relation with each other and the stepped edges of the key dered at their opposite edges, and interlocking intermediate tiles between and interlocked with adjacent members of the two sets of key tiles.

4. A tile lining for cylindrical shells, comprising sets of key tiles having their adja cent edges smooth and in abutting relation and their other faces stepped, and intermediate tiles steppedat both edges and interlocked together at such edges and to the stepped edges of the key tiles, the abutting edges of the key tiles being bevelled and one forming a wedge between one of the intermediate tiles and the other key tile.

5. A tile lining for cylindrical shells, comprising two sets of diametrically opposite .key tiles, the sets beingat right angles, each set being composed of two pairs of abutting tile smooth at their abutting edges and shouldered at their opposite edges, and intel-locking intermediate tiles between and interlocked with adjacent members of the two sets of key tiles, the abutting edges of the key tiles being bevelled and one forming a wedge between one of the intermediate-tiles and the other key tile.

In witness whereof I hereunto afix my signature.

GEORGE P. REINTJES. 

